3863640791 has 2 divisors, whose sum is σ = 3863640792. Its totient is φ = 3863640790.

The previous prime is 3863640761. The next prime is 3863640811. The reversal of 3863640791 is 1970463683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3863640791 - 2¹⁸ = 3863378647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3863640761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1931820395 + 1931820396.

It is an arithmetic number, because the mean of its divisors is an integer number (1931820396).

Almost surely, 2^3863640791 is an apocalyptic number.

3863640791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3863640791 is an equidigital number, since it uses as much as digits as its factorization.

3863640791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 3863640791 is about 62158.1916644942. The cubic root of 3863640791 is about 1569.1540455930.

The spelling of 3863640791 in words is "three billion, eight hundred sixty-three million, six hundred forty thousand, seven hundred ninety-one".